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Table 4 Average hourly data of temperature (°C) and relative humidity (%) collected by ARPA Lombardia during water absorption measurements conducted before the treatments and after 1, 4, 7, 10 and 12 months from the application

From: On-site monitoring of the performance of innovative treatments for marble conservation in architectural heritage

Monitoring step

Temperature (°C)

Relative humidity (%)

Before treatments

30.9

41.0

After 1 month

21.4

37.6

After 4 monthsa

7.0a

87.6a

After 7 months

11.0

41.4

After 10 months

27.0

47.5

After 12 months

28.2

55.1

  1. aRefers to the environmental conditions recorded during the winter season monitoring step